package ch05.ex52.ex514;

public class MobileTelephone {
    SIM card;
    public void useSIM(SIM card){
        this.card=card;
    }
    public void showMess(){
        System.out.println("使用的卡是："+card.giveCorpName()+"提供的");
        System.out.println("手机号码是："+card.giveNumber());
    }
}
